.ad {
    display: flex;
    flex-direction: column;

    //标题
    .ad-title {
        text-align: center;
        line-height: 44px;
        height: 44px;
    }

    //主体内容
    .ad-main {
        height: 2px;
        background: url(../../assets/images/advertisement-bg.jpg) no-repeat center top;
        background-size: cover;
        flex-grow: 1;
    }

    //倒计时跳过
    #timebox {
        position: absolute;
        right: 20px;
        top: 64px;

        width: 105px;
        height: 40px;
        line-height: 40px;
        text-align: center;
        border-radius: 20px;
        background: #fff;
        font-size: 14px;
        color: #333;
    }

    #slogan {
        position: absolute;
        left: 0;
        width: 100%;
        color: #fff;
        text-align: center;
        animation: move 1s forwards;
    }
}

@keyframes move {
    0% {
        bottom: -20px;
        opacity: 0;
        font-size: 12px;
    }

    50% {
        bottom: 200px;
        opacity: 1;
        font-size: 50px;
    }

    100% {
        bottom: 80px;
        opacity: 1;
        font-size: 30px;
    }
}